RU94006842A - BLACKBOARD - Google Patents
BLACKBOARDInfo
- Publication number
- RU94006842A RU94006842A RU94006842/12A RU94006842A RU94006842A RU 94006842 A RU94006842 A RU 94006842A RU 94006842/12 A RU94006842/12 A RU 94006842/12A RU 94006842 A RU94006842 A RU 94006842A RU 94006842 A RU94006842 A RU 94006842A
- Authority
- RU
- Russia
- Prior art keywords
- sheets
- frame
- blackboard
- enameled
- chalk
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 239000011111 cardboard Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 239000003550 marker Substances 0.000 claims 1
- 239000011087 paperboard Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU94006842/12A RU2071676C1 (en) | 1994-02-22 | 1994-02-22 | BLACKBOARD |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU94006842/12A RU2071676C1 (en) | 1994-02-22 | 1994-02-22 | BLACKBOARD |
Publications (2)
Publication Number | Publication Date |
---|---|
RU94006842A true RU94006842A (en) | 1995-10-20 |
RU2071676C1 RU2071676C1 (en) | 1997-01-10 |
Family
ID=48434229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU94006842/12A RU2071676C1 (en) | 1994-02-22 | 1994-02-22 | BLACKBOARD |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2071676C1 (en) |
-
1994
- 1994-02-22 RU RU94006842/12A patent/RU2071676C1/en active
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